TODO - Core gameplay

parking vs bus tutorial level
Example use cases
- maybe dont need simulation at all to play with these
  - just a smooth editing and diffing UI
- montlake/520 turn restrictions with pedestrian scramble
- close interior neighborhoods to most cars (except for src/dst), see how traffic restricted to arterials would work
  - puzzle: with only X miles of retained road, where would you leave them? what roads would go away?
- create a bike network with minimal hills, dedicated roads, minimal crossings
easter eggs
- name agents, with some good names scattered in (Dustin Carlino, Dustin Bikelino, Dustin Buslino...)

The very detailed driving model

different lookahead reaction times
could see if we ever have a lookahead constraint to deaccel more than what we're capable of. it might mask problems. but since things like accel_to_stop_in_dist don't have a careful notion of how much time will pass, they recommend big rates sometimes.
no way for an agent to request a turn and ASAP have it granted. are there cases where they might slow down unnecessarily?
lane changing: seattle polite. planned things work. limit to space needed.

render maps as super simple transit network.
event based + FSM + radically simpler model. essence of scarcity -- intersections, parking, lane capacity.
simpler kinematics: if we recognize we're stopping for an intersection or following a vehicle closely, just set the final state to be perfectly what we desire, rather than solving for the acceleration to achieve that. intent (and capabilities), not mechanics!
check out https://github.com/movsim/traffic-simulation-de
collapse smaller roads/neighborhoods and just simulate aggregate stats about them

try real distance over time ;) but does it make intersection calculation extremely hard?
avoid impossible accel/deaccel
Make cars cover an entire lane, even when it's short
Handle lead car being faster
The speed stated in the middle of intervals is clearly wrong for the follower car
Prototype alternate driving model
- branch or forked code?
- keep timesteps or immediately cut over to events?
- figure out how lookahead/interruptions and replanning work